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【单选题】
上海某商厦屋顶上铺满了一个个种植箱,这里被称为 “ 屋顶农庄 ” 。专门从长白山运来优质土壤,吸引附近居民租借种植箱种植蔬果。屋顶农庄运作以来,整栋商厦夏季空调用电量下降 ...... 根据材料完成 (1) ~ (2) 题。 除了经济效益外,开设屋顶农庄还可获得环境效益。因为它有助于A.
减少灰霾污染
B.
缓和热岛效应
C.
削弱紫外辐射
D.
增强雨岛效应
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皮皮学刷刷变学霸
举一反三
【单选题】– You look very tired this morning. What did you do last afternoon? -- I did _______ Christmas shopping.
A.
a number of
B.
a few of
C.
a lot of
D.
a piece of
【单选题】You look very tired. You ____ too hard these days.
A.
could have worked
B.
ought to have worked
C.
should have worked
D.
must have worked
【单选题】—You look very tired this morning. What did you do yesterday afternoon? —I did Christmas shopping. [ ]
A.
a lot of
B.
a few of
C.
a number of
D.
a piece of
【单选题】—You look very tired_______at all last night?—N
A.
7. —You look very tired_______at all last night? —No,not really.I’m stired out now. ( 全国 2) A.Do yousleep
B.
Were you sleeping
C.
Did yousleep
D.
Had you slept
【单选题】You look very tired. You ____ late last night.
A.
needn’t sit up
B.
didn’t need to sit up
C.
shouldn’t sit up
D.
needn’t have sat up
【简答题】由式ω=△(pv)+ω t 可知，体积功叫总是大于技术功ω t 。( )
【单选题】You look very tired and you must have been preparing for the coming examination yesterday evening, _________ you ?
A.
didn’t you
B.
haven’t
C.
weren’t
D.
hadn’t
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